I'll do it, but I was hopping to get more context about it, also checking if it wasn't known somewhere.
2015-04-15 14:09 GMT-04:00 Vincent Delecroix <[email protected]>: > Do you know how to open a ticket? > > > On 15/04/15 20:08, Viviane Pons wrote: > >> More context about this: >> >> I'm here with Buck at PyCon and he said he actually had this line running >> a >> few years ago. I don't know anything about this stuff so it's difficult to >> track what's wrong now. >> >> But it's really bad, as you can see, it's not just a usual exception, it's >> actually crashing Sage... >> >> (also, this is on Sage 6.6 and I believe it was there before. Buck had the >> error on the previous version and updated it to see if was fixed on 6.6) >> >> Best >> >> Viviane >> >> 2015-04-15 14:04 GMT-04:00 Vincent Delecroix <[email protected]>: >> >> Already the following fails >>> >>> sage: integrated = -(gamma(1/2*k, 1/2*R*k) - gamma(1/2*k))/gamma(1/2*k) >>> sage: plot(integrated.subs(k=41), (R,0,6)) >>> /home/vincent/bin/sage: line 134: 13683 Segmentation fault >>> "$SAGE_ROOT/src/bin/sage" "$@" >>> >>> >>> >>> On 15/04/15 18:55, Buck Evan wrote: >>> >>> I'm trying to plot a function involving the gamma function. It's this >>>> one: >>>> >>>> -(gamma(1/2*k, 1/2*R*k) - gamma(1/2*k))/gamma(1/2*k) >>>> >>>> >>>> >>>> If I try to plot the function with a k value any greater than 40, I get >>>> a >>>> segfault: >>>> >>>> >>>> sum( >>>> plot( >>>> integrated(k=k), >>>> (x, 0, 2.5), >>>> ymax=1.6, >>>> color=color, >>>> legend_label='k=%i' % k, >>>> figsize=6, >>>> aspect_ratio=1.0, >>>> ) >>>> for k, color in zip( >>>> [21, 22, 23, 26, 31, 41], >>>> ['blue', 'brown', 'red', 'green', 'black', 'yellow', >>>> 'orange'], >>>> ) >>>> ) >>>> >>>> /Users/buck/trees/mine/sage/sage: line 134: 12283 Segmentation fault: >>>> 11 "$SAGE_ROOT/src/bin/sage" "$@" >>>> [I 12:15:10.735 NotebookApp] KernelRestarter: restarting kernel (1/5) >>>> >>>> >>>> This is extremely similar to the behavior I was getting with the >>>> pre-built >>>> 6.5 sage, so I think it's an old bug rather than a problem with my >>>> build. >>>> In 6.5 there was no output (I suspect the Segmentation Fault message was >>>> gobbled somehow), so I never tried to enable / debug a core dump in 6.5. >>>> >>>> Inspecting the 6.6 core dump, I see that it used 27528, mostly calling >>>> back >>>> and forth between two functions. >>>> Smells like stack overflow to me. >>>> >>>> (lldb) bt >>>> [27503/47384] >>>> * thread #1: tid = 0x0000, 0x0000000103588007 >>>> libpython2.7.dylib`vgetargskeywords + 23, stop reason = signal SIGSTOP >>>> * frame #0: 0x0000000103588007 libpython2.7.dylib`vgetargskeywords >>>> + >>>> 23 >>>> frame #1: 0x000000010358890e >>>> libpython2.7.dylib`PyArg_ParseTupleAndKeywords + 174 >>>> frame #2: 0x000000010356c40e libpython2.7.dylib`builtin___ >>>> import__ >>>> + 94 >>>> frame #3: 0x00000001034a377f >>>> libpython2.7.dylib`PyObject_CallFunctionObjArgs + 367 >>>> frame #4: 0x000000010774c1c4 coerce.so`__Pyx_Import(name=< >>>> unavailable>, >>>> from_list=0x0000000117da7560, level=<unavailable>) + 180 at coerce.c: >>>> 20339 >>>> frame #5: 0x000000010774d08e >>>> coerce.so`__pyx_f_4sage_9structure_6coerce_py_scalar_ >>>> parent(__pyx_v_py_type=<unavailable>, >>>> __pyx_skip_dispatch=< >>>> unavailable>) + 510 at coerce.c:2938 >>>> frame #6: 0x0000000107760318 >>>> coerce.so`__pyx_f_4sage_9structure_6coerce_24CoercionModel_cache_maps_ >>>> canonical_coercion(__pyx_v_self=0x00000001 >>>> 07648d50, __pyx_v_x=0x00007f8fbfc37238, __pyx_v_y=0x0000000118c5f390, >>>> __pyx_skip_dispatch=<unavailable>) + 3128 at coerce.c:9585 >>>> frame #7: 0x0000000107763cfe >>>> coerce.so`__pyx_pw_4sage_9structure_6coerce_24CoercionModel_cache_maps_ >>>> 25canonical_coercion >>>> + 13 at coerce.c:105 >>>> 64 >>>> frame #8: 0x0000000107763cf1 >>>> coerce.so`__pyx_pw_4sage_9structure_6coerce_24CoercionModel_cache_maps_ >>>> 25canonical_coercion(__pyx_v_self=0x00000 >>>> 00107648d50, __pyx_args=0x0000000117e5f248, >>>> __pyx_kwds=0x0000000000000000) >>>> + 65 >>>> frame #9: 0x0000000103574f10 libpython2.7.dylib`PyEval_EvalFrameEx >>>> + >>>> 26208 >>>> frame #10: 0x0000000103575fb0 libpython2.7.dylib`PyEval_EvalCodeEx >>>> + >>>> 2144 >>>> frame #11: 0x00000001034dae0c libpython2.7.dylib`function_call + >>>> 124 >>>> frame #12: 0x000000010d680381 >>>> pynac.so`__Pyx_PyObject_Call(func=0x0000000108f0c410, >>>> arg=<unavailable>, >>>> kw=PyObject * at scalar) + 65 at pynac >>>> .cpp:26785 >>>> frame #13: 0x000000010d6a76e9 >>>> pynac.so`py_gcd(__pyx_v_n=0x00007f8fbfc37238, >>>> __pyx_v_k=0x0000000118c5f390) >>>> + 521 at pynac.cpp:8416 >>>> frame #14: 0x000000010d7d0f28 >>>> libpynac.1.dylib`GiNaC::gcd(GiNaC::numeric const&, GiNaC::numeric >>>> const&) + >>>> 56 >>>> frame #15: 0x000000010d7ad100 >>>> libpynac.1.dylib`GiNaC::add::integer_content() const + 496 >>>> frame #16: 0x000000010d7acef0 >>>> libpynac.1.dylib`GiNaC::ex::integer_content() const + 16 >>>> frame #17: 0x000000010d79fe01 libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 1377 >>>> frame #18: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #19: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #20: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #21: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #22: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #23: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #24: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #25: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #26: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #28: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #29: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> ... >>>> frame #27502: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27503: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #27504: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27505: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #27506: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27507: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #27508: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27509: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #27510: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27511: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #27512: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27513: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #27514: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27515: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>> eval(int) >>>> const + 2507 >>>> frame #27516: 0x000000010d71ba91 >>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) + >>>> 113 >>>> frame #27517: 0x000000010d7d1ccd >>>> libpynac.1.dylib`GiNaC::operator*(GiNaC::ex const&, GiNaC::ex const&) + >>>> 77 >>>> frame #27518: 0x000000010da76768 >>>> expression.so`__pyx_f_4sage_8symbolic_10expression_ >>>> 10Expression__mul_(__pyx_v_left=0x0000000117db6cb0, >>>> __pyx_v_right=0x0000000117db6ea8, __pyx_skip_dispatch=<unavailable>) + >>>> 2504 >>>> at expression.cpp:18109 >>>> frame #27519: 0x00000001075bed30 >>>> element.so`__pyx_pw_4sage_9structure_7element_11RingElement_11__mul__ + >>>> 64 >>>> at element.c:17301 >>>> frame #27520: 0x00000001075becf0 >>>> element.so`__pyx_pw_4sage_9structure_7element_ >>>> 11RingElement_11__mul__(__pyx_v_left=0x0000000117db6cb0, >>>> __pyx_v_right=0x0000000117db6ea8) + 14 >>>> frame #27521: 0x000000010349ff8b libpython2.7.dylib`PyNumber_ >>>> Multiply >>>> + >>>> 187 >>>> frame #27522: 0x0000000117bceb47 >>>> wrapper_py.so`interp_py(args=0x0000000117dbeda8, >>>> constants=0x00007f8fbd980f30, stack=<unavailable>, >>>> code=0x00007f8fbd9a8eac) >>>> + 519 at interp_py.c:110 >>>> frame #27523: 0x0000000117bc1cca >>>> wrapper_py.so`__pyx_pw_4sage_3ext_12interpreters_10wrapper_ >>>> py_10Wrapper_py_5__call__(__pyx_v_self=0x00000001181db380, >>>> __pyx_args=0x0000000117dbed90, __pyx_kwds=0x0000000000000000) + 138 at >>>> wrapper_py.c:1478 >>>> frame #27524: 0x00000001034a2bd3 libpython2.7.dylib`PyObject_Call >>>> + >>>> 67 >>>> frame #27525: 0x00000001035727bd libpython2.7.dylib`PyEval_ >>>> EvalFrameEx >>>> + 16141 >>>> frame #27526: 0x0000000103575fb0 libpython2.7.dylib`PyEval_ >>>> EvalCodeEx >>>> + >>>> 2144 >>>> frame #27527: 0x000000010357513d libpython2.7.dylib`PyEval_ >>>> EvalFrameEx >>>> + 26765 >>>> frame #27528: 0x000000010e399354 >>>> >>>> >>>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sage-support" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/sage-support. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >> > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
